Profile: Santos joins Kenley Jansen in the fascinating realm of bad-hitters-turned-amazing-relievers. Santos was actually a first-round pick of the Diamondbacks in 2002, but after flailing away with a .699 OPS after eight minor league campaigns, the White Sox put him on the mound and turned him loose in spring training of 2010. Santos was a bit wild, issuing seven free passes in 10.1 innings, but he also fanned 16, so the club invited him up north. He rewarded the Sox' faithfulness by not allowing a run for the first month, and hasn't looked back since, fanning nearly 12 per nine while reeling his WHIP in a bit in 2011. Santos is on his way to Toronto to close in 2012 as part of the White Sox odd 'rebuilding' phase, and will likely rack up a bunch of saves for a Jays club that could be sneaky good. (Brandon Warne)

The Quick Opinion: Santos is going to be a fun closer to watch north of the border. On a team that's likely to be pretty darn good, Santos should come close to saving 40 games, and likely will whiff well over a hitter an inning. The only thing that may derail him is his command, which tends to be extremely erratic when it's off at all.

Profile: After a monster 2011 in which Sergio Santos struck out 35.4% of the batters he faced, 2012 saw him pitch in only six games and five innings before shoulder surgery ended his season. He’s healthy, though, and reportedly ready for spring training, where he’ll have the opportunity to regain his job as closer, which he lost last year to Casey Janssen, who filled in admirably. If Santos is healthy -- a big if, of course, for a hard-throwing pitcher coming off shoulder surgery -- and closing, he’ll get you strikeouts and saves. But know this: he’s erratic, and walks batters. When his command goes, his command goes, you know what I’m saying? As a former shortstop, perhaps he's still developing that ability, but it's still a fact of life. An arm to keep an eye on; let’s go with that. (Navin Vaswani)

The Quick Opinion: Sergio Santos is coming off shoulder surgery that limited him to only five innings in 2012 and is an arm to keep an eye on in Toronto’s bullpen. If he’s healthy and closing on an improved Toronto team, he can get you strikeouts and saves (and walks), something your fantasy team is always looking for more of (except the walks).

Profile: Sergio Santos was something of a forgotten player in the Blue Jays' bullpen shuffle. After being traded to Toronto from the South Side prior to the 2012 season, the shortstop-turned closer promptly got hurt after only five innings. By the time he returned to action in 2013, Casey Janssen was established as the closer. While Santos only pitched 25 innings in 2013 return to action, they were excellent innings, as he finished with an ERA and FIP under two. His pre-injury fastball velocity also seemed pretty much intact, a very good sign. Santos has a pretty standard repertoire for a reliever: fastball and slider, with a change he throws to lefties. He is almost as good against lefties as he is against righties, enabling him to be more than a situational reliever. Health is a concern, and little has been seen of Santos over the last two seasons. One could make an argument, though, that he is still the best reliever in Toronto's pen. He is still behind Janssen for saves, and probably Steve Delabar as well. However, teams like relievers with "closer experience," so if Janssen hurts or stumbles and Santos continues to pitch well, it would not be surprising to see him leapfrog back into the closer position. He is worth a pick in deeper leagues in which closers are scarce; even if he does not become closer, he is good enough to help in the strikeout, ERA, and WHIP categories over a full season. (Matt Klaassen)

The Quick Opinion: Santos lost his closer spot in Toronto after missing most of the last two seasons. He seems to be back in dominant form, and if he's healthy, is worth a pick in deep leagues not only for the possibility of saves, but for his likely statistical contributions.

Profile: Sergio Santos' career has been quite the ride. He made it all the way to Triple-A as a position player, was traded some, then in 2009 with the White Sox he was converted to pitcher. By 2010, he was relieving in the majors, and quite effectively. In 2011, he saved 30 games for Chicago, racking up strikeouts with a devastating combination of a 95-mile-per-hour fastball and an 85-mile-per-hour-slider. The White Sox signed him to a contract extension at the end of the 2011 season, then promptly traded him to the Blue Jays. Santos then missed almost the entire 2012 season with a shoulder injury. He came back in 2013, and although he had been supplanted as closer, in a limited 25 innings in the majors, he seemed to be as effective as ever -- if his strikeout rate was now awesome rather than otherworldly, he seemed to be making up for it with good control. The return to dominance was short-lived, though. In 2014 the strikeouts shot back up, but Santos lost all semblance of control. A forearm strain did not help matters, either. Santos did seem to have great misfortune on balls in play and in the air. Still, it was understandable that the Blue Jays did not pick up his option. Now with the Dodgers, it's improbable that even a healthy and dealing Santos would close. Wait and see if he's worth owning for strikeouts and holds. (Matt Klaassen)

The Quick Opinion: Past arm issues and other uncertainties mean that it is better to wait and see if Santos is healthy and dealing before trying to pick him up on waivers for strikeouts and (possibly) holds.

Profile: At his best, Santos has the stuff to be a major league closer, flashing a fastball in the upper 90s and wipeout secondary stuff. Unfortunately, as a result of both a recent propensity to giving up home runs and a serious injury, his future is in serious doubt. While a return from Tommy John surgery is possible during the second half of the 2016 season, it would take a lot going right to get Santos back to the mound in a truly meaningful way. (Owen Watson)

The Quick Opinion: It's been a very bumpy ride for Santos during the past two years, as he's been victimized by home run per fly ball rates over 20% and unsuccessful stops at three different ball clubs. After an elbow injury in June of 2015 that required Tommy John surgery, he'll miss almost the entirety of the 2016 season. Expect any late-season fantasy value to be very limited, at best.

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